CN212416093U

CN212416093U - Absorbent article

Info

Publication number: CN212416093U
Application number: CN202020190690.2U
Authority: CN
Inventors: 吉川善史
Original assignee: Libaud Co ltd
Current assignee: Libaud Co ltd
Priority date: 2019-02-20
Filing date: 2020-02-20
Publication date: 2021-01-29
Anticipated expiration: 2030-02-20
Also published as: DE202020000629U1; JP7169221B2; JP2020130644A

Abstract

The utility model provides an absorbent article, it has set up elastomeric element in rising flap or leg girth portion, when the function that brings of setting up of proper performance elastomeric element, alleviates elastomeric element to the contact of wearer's skin, and the feel of dress is excellent. An absorbent article (1) provided with a standing flap (6) on the skin surface side, wherein the standing flap (6) has a base (10) as a standing starting point and a free end (11) as a standing distal end, and is formed by folding over a flap forming sheet body (7) at the free end (11); a flap elastic member (8) is provided between one side portion (7A) and the other side portion (7B) that sandwich the folded free end (11) of the flap forming sheet body (7); a flap elastic member (8) is mounted to one side portion (7A) of the flap forming sheet (7); an acetate fiber aggregate (9) is arranged between the flap elastic member (8) and the other side part (7B) of the flap forming sheet body (7).

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article such as a disposable diaper, a urine pad, a light incontinence pad, a sanitary napkin, or the like.

Background

Absorbent articles are provided with various elastic members to prevent leakage of excrement such as urine and to improve the fit with the wearer. For example, the skin surface side of the absorbent article is provided with a flap for preventing lateral leakage of urine or the like, and the flap is provided with a flap elastic member so that the flap rises when worn. In addition, in the case where the absorbent article is a disposable diaper, leg elastic members are generally provided in portions along the leg circumferences of the wearer in order to improve the fit to the leg circumferences of the wearer. This can prevent urine and the like from leaking around the leg of the wearer when the disposable diaper is worn.

The elastic member provided in this manner is required to have a certain degree of tension (contraction force) in order to exhibit a predetermined function. However, in the case where the elastic member is provided in this manner, there is a possibility that the elastic member comes into relatively strong contact with the skin of the wearer, and as a result, there is a possibility that the skin of the wearer is strongly tightened by the elastic member or feels uncomfortable. In order to alleviate contact between an elastic member and the skin of a wearer, patent document 1 discloses a disposable diaper gather member including a stretchable member which directly or indirectly fixes a tow open body of cellulose acetate fibers and stretches in one direction with the tow open body.

Documents of the prior art

Patent document

Japanese patent application laid-open No. 2018-059244 of patent document 1

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

According to the gather member of patent document 1, the bundle-opened body of the cellulose acetate fiber is arranged around the elastic member (the stretchable member), so that the contact of the elastic member with the skin of the wearer can be weakened. On the other hand, since the elastic member is directly or indirectly fixed to the tow open body of the cellulose acetate fiber, the contraction force of the elastic member is eliminated by the tow open body of the cellulose acetate fiber, and the effect of providing the elastic member may not be sufficiently exhibited.

In view of the above, an object of the present invention is to provide an absorbent article having an elastic member provided in a flap or a leg hole portion, which appropriately performs the function of the elastic member and simultaneously alleviates the contact of the elastic member with the skin of the wearer, thereby providing an excellent wearing feeling.

Means for solving the problems

An absorbent article of the present invention that can solve the above-described problems has a width direction and a front-back direction, and a standing flap is provided on a skin surface side, and is characterized in that the standing flap has a base portion as a standing starting point and a free end as a standing distal end, and is formed by folding over a flap forming sheet body at the free end; a flap elastic member extending in the front-rear direction between one side portion and the other side portion of the free end of the flap forming sheet body; the flap elastic member is mounted to one side of the flap forming sheet; an acetate fiber aggregate is arranged between the flap elastic component and the other side part of the flap forming sheet body.

In the absorbent article thus configured, the acetate fiber aggregate is overlapped with the flap elastic member and disposed between the folded flap forming sheet bodies, so that the flap elastic member is less likely to strongly contact the skin of the wearer, and the flap-raising cushioning property can be imparted. On the other hand, since the flap elastic member is attached to the flap forming blade, the contraction force of the flap elastic member is directly transmitted to the flap forming blade, and the standing flap can be appropriately raised. Therefore, the absorbent article of the present embodiment can provide a high standing effect of the standing flap toward the skin of the wearer, thereby improving the effect of preventing leakage of urine or the like, and can alleviate contact with the skin of the wearer, thereby providing an excellent wearing feeling.

The standing flap is configured to be folded back along a fold line extending in the front-rear direction between the base and the free end, for example. Preferably, in the thus configured standing flap, a flap elastic member and an acetate aggregate are provided from the folding line to a flap distal end portion between the free ends; the other side portion of the flap forming sheet body is positioned on the skin surface side of the flap distal end portion in the laid-down state of the standing flap. Thus, when the flap is raised, the flap elastic member is easily brought into contact with the skin of the wearer by the acetate fiber aggregate, and the cushioning property against the skin of the wearer is improved.

Preferably, in the thus formed standing flap, the acetate aggregate is not provided between the base portion of the standing flap and the fold-over line. Thus, the standing flap is easily raised toward the skin of the wearer. Further, the standing flap may be folded thinly before use of the absorbent article.

The raised flap may be unfolded from the base to the free end. In this case, it is preferable that the flap forms one side portion of the sheet body, and is located on the skin surface side of the flap in the laid-down state of the flap. In the raised flap thus configured, the higher the raised flap is raised, the more easily the inner side surface in the width direction of the raised flap in the raised state comes into contact with the skin of the wearer. Therefore, in the flap-forming sheet body, the one side portion to which the flap elastic member is attached is positioned on the skin surface side of the standing flap in the laid-down state of the standing flap, so that when the standing flap is standing up, the one side portion of the flap-forming sheet body is easily positioned on the outer side surface in the width direction, and the flap elastic member easily contacts the skin of the wearer through the acetate fiber aggregate.

In the raising flap thus formed, the acetate fiber aggregate is preferably located in the vicinity of the free end of the base portion, apart from the base portion of the raising flap. Thereby, the standing flap is more likely to stand higher toward the skin of the wearer.

Preferably, the flap elastic member is attached to one side portion of the flap forming sheet by an adhesive, the acetate aggregate is bonded to the other side portion in an adhesive region provided on the other side portion of the flap forming sheet, and is bonded to the one side portion of the flap forming sheet by the adhesive applied to the flap elastic member, and the other portion is not bonded to the one side portion of the flap forming sheet. Preferably, the acetate fiber aggregate is bonded to the other side portion of the flap-forming sheet, and is not bonded to the one side portion of the flap-forming sheet. Therefore, the contraction force of the flap elastic member is easily transmitted to the flap forming sheet at the side portion sandwiching the free end of the flap forming sheet, and the rising of the rising flap is not easily hindered by the acetate aggregate.

Preferably, the acetate fiber aggregate extends forward from the front side end of the flap elastic member and rearward from the rear side end of the flap elastic member. This makes it easier to suppress the flap elastic member from coming into strong contact with the skin of the wearer. The acetate fiber aggregate may extend within 10mm rearward from the front side end of the raising flap and within 10mm forward from the rear side end of the raising flap.

In addition, the present invention also provides an absorbent article having a width direction and a front-rear direction, and provided with an absorber, wherein a leg elastic member is provided outside the absorber in the width direction between a first sheet body and a second sheet body arranged on a non-skin surface side compared to the first sheet body; a leg elastic member mounted to the second panel; an acetate fiber aggregate is provided between the leg elastic member and the first sheet.

In the absorbent article thus configured, the acetate fiber aggregate is superposed on the leg elastic members and disposed in the leg hole portions of the absorbent article, and therefore the leg elastic members are less likely to strongly contact the skin of the wearer, and cushioning properties can be imparted to the leg hole portions. On the other hand, since the leg elastic members are attached to the second sheet, the contraction force of the leg elastic members is directly transmitted to the second sheet, and the gathers can be appropriately formed in the leg-surrounding portions. The absorbent article of the present embodiment can improve the fit around the legs of the wearer and can alleviate the contact with the skin of the wearer, thereby providing an excellent wearing feeling.

Preferably, the leg elastic member is attached to the second sheet by an adhesive, the acetate fiber aggregate is bonded to the first sheet at an adhesive region provided on the first sheet, and is bonded to the second sheet by an adhesive applied to the leg elastic member, and the rest of the acetate fiber aggregate is not bonded to the second sheet. Preferably, in addition, the acetate fiber aggregate is bonded to the first panel and not bonded to the second panel. This facilitates the transmission of the contraction force of the leg elastic members to the second sheet, and prevents the formation of gathers in the leg hole portions from being easily hindered by the acetate fiber aggregate.

The absorbent article having the leg hole portions configured as described above can be suitably applied to a tape-type disposable diaper. In this case, the tape-type disposable diaper can be configured such that a liquid-permeable top sheet is provided on the skin surface side of the absorbent body, a liquid-impermeable back sheet is provided on the non-skin surface side of the absorbent body, side sheets are provided on both sides in the width direction of the top sheet, the side sheets are used as the first sheet member, and the back sheet is used as the second sheet member. When the absorbent article having the leg hole portions configured as described above is applied to a pants-type disposable diaper, the pants-type disposable diaper can be configured such that the absorbent body is disposed in the crotch portion of an outer covering member forming a shape of underwear, the outer covering member has an outer sheet body and an inner sheet body provided on the skin surface side thereof, the inner sheet body is defined as a first sheet body, and the outer sheet body is defined as a second sheet body.

Beneficial effects of the utility model

The absorbent article of the present invention can raise the flap toward the skin of the wearer by the contraction force of the flap elastic member, and can alleviate the contact of the raised flap with the skin of the wearer due to the acetate fiber aggregate while improving the leakage prevention effect of urine and the like, thereby providing excellent wearing feeling. In addition, the absorbent article of the present invention can improve the fit to the leg circumference of the wearer by the contraction force of the leg elastic members, and can alleviate the contact of the leg elastic members with the skin of the wearer due to the acetate fiber aggregate, so that the absorbent article is excellent in wearing feeling.

Drawings

Fig. 1 is a plan view of a light incontinence pad as an example of an absorbent article of the present invention, viewed from the top sheet side.

Fig. 2 shows a cross-sectional view at ii-ii of the absorbent article shown in fig. 1.

Fig. 3 is a plan view of the urine pad as an example of the absorbent article of the present invention, viewed from the top sheet side.

Fig. 4 shows a cross-sectional view at iv-iv of the absorbent article shown in fig. 3.

Fig. 5 is a plan view of a tape-type disposable diaper seen from the top sheet side as an example of the absorbent article of the present invention.

Fig. 6 shows a cross-sectional view at vi-vi of the absorbent article shown in fig. 5.

Fig. 7 is a perspective view of an underpants type disposable diaper as an example of the absorbent article of the present invention.

Fig. 8 is a plan view of the absorbent article (disposable diaper) shown in fig. 7, in which the front abdominal section and the back section are separated from each other and unfolded, as viewed from the skin surface side.

FIG. 9 shows a cross-sectional view at IX-IX of the absorbent article shown in FIG. 8.

Description of the symbols

1. 1A, 1B, 21, 41: an absorbent article;

2.22, 48: a topsheet;

3. 23, 49: a back sheet;

4. 24, 50: an absorbent body;

6. 29, 51: erecting a flap;

7: the flap forms a sheet;

8. 28, 52: a flap elastic member;

9. 32, 56: acetate fiber aggregate;

10: a base;

11: a free end;

12: folding lines are folded;

13: a flap distal end;

14: a flap rising portion;

27: a side panel;

30. 53: a leg elastic member;

44: an exterior member;

45: an inner layer sheet body;

46: an outer sheet;

47. an absorbent body.

Detailed Description

The absorbent article of the present invention is provided with an elastic member in the crotch portion or leg-surrounding portion of the wearer. Absorbent articles are provided with various elastic members to prevent leakage of excrement such as urine and to improve the fit with the wearer. For example, in the case where a standing flap is provided on the skin surface side of the absorbent article to prevent lateral leakage of urine or the like, the standing flap is provided with a flap elastic member so that the standing flap stands up when worn. In addition, in the case where the absorbent article is a disposable diaper, leg elastic members are generally provided in portions along the leg circumferences of the wearer in order to improve the fit to the leg circumferences of the wearer. This can prevent urine and the like from leaking around the leg of the wearer when the disposable diaper is worn.

The flap elastic member or the leg elastic member functions to raise the raising flap upward in the direction opposite to the direction of gravity and to lift the portion along the leg hole of the wearer upward when the absorbent article is worn. This makes it possible to prevent leakage of urine or the like by bringing the rising flaps or the portions along the leg circumferences of the wearer into contact with the skin of the wearer. In order to properly perform such a function, the flap elastic member or the leg elastic member is attached to the absorbent article in a stretched state, and at this time, a certain large tension (contraction force) is required to be applied to the elastic member. However, in the case where the elastic member is provided in this manner, there is a possibility that the elastic member comes into relatively strong contact with the skin of the wearer, and as a result, there is a possibility that the skin is strongly tightened by the flap elastic member or the leg elastic member or feels uncomfortable to the wearer.

The present invention relates to an absorbent article provided with a flap elastic member or a leg elastic member as described above, and is configured so that the flap elastic member or the leg elastic member does not strongly contact the skin of the wearer while appropriately performing the above-described function by the flap elastic member or the leg elastic member. The absorbent article of the present invention will be described in detail below.

The absorbent article has a front-back direction and a width direction. The front-back direction refers to a direction extending in the front-back direction between the crotch of a wearer when the wearer wears the absorbent article. The width direction is a direction perpendicular to the front-back direction on the same plane as the absorbent article, and corresponds to the left-right direction of the wearer when the absorbent article is worn. In addition, the thickness direction is defined as the vertical direction with respect to the plane formed by the front-rear direction and the width direction. Further, when the absorbent article is worn by the wearer, the side facing the skin of the wearer is the skin surface side, and the opposite side is the non-skin surface side.

Examples of absorbent articles include disposable diapers, urine pads, light incontinence pads, and sanitary napkins. The shape of the absorbent article is not particularly limited. In the case where the absorbent article is a diaper, a light incontinence pad, or a sanitary napkin, the shape of the absorbent article is generally rectangular, oblong, hourglass, gourd-shaped, or the like.

In the case where the absorbent article is a disposable diaper, the disposable diaper is composed of, for example, a front abdominal section, a back section, and a crotch section including an absorber and located between the front abdominal section and the back section. The front abdominal region corresponds to a portion that comes into contact with the abdominal side of the wearer when the disposable diaper is worn, and the rear back region corresponds to a portion that comes into contact with the back side of the wearer when the disposable diaper is worn. The crotch portion is located between the front abdominal portion and the rear abdominal portion and corresponds to a portion that contacts the crotch of the wearer.

The disposable diaper may be a tape-type disposable diaper or a pants-type disposable diaper. The tape-type disposable diaper is configured, for example, by providing fixing members at both ends in the width direction of the back part, and by fixing the fixing members to the front abdominal part, the shape of underwear can be formed when worn. An underpants-type disposable diaper has an underpants shape having a waist opening and a pair of leg openings, and is formed into the shape of underpants before wearing.

Preferably, the absorbent article has a structure in which an absorbent body is disposed between the top sheet and the back sheet. In the case where the absorbent article is a disposable diaper, the disposable diaper may be configured such that: for example, an absorbent body is provided in a crotch portion of an exterior member having a front abdominal section, a back section, and a crotch portion located between the front abdominal section and the back section, and the absorbent body is disposed between a top sheet and a back sheet. In addition, the disposable diaper may be formed such that a laminate in which an absorber is disposed between a top sheet and a back sheet has a front abdominal section, a back section, and a crotch section located therebetween.

The top sheet is a sheet member disposed on the skin surface side of the absorber, and is provided so as to face the skin of the wearer when the absorbent article is worn. The topsheet is preferably liquid permeable. As the top sheet, for example, a nonwoven fabric made of hydrophilic fibers such as cellulose, rayon, and cotton; or a nonwoven fabric formed of hydrophobic fibers of polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), or the like, in which the surfaces of the hydrophobic fibers are hydrophilized by a surfactant. Further, woven cloth, knitted cloth, perforated plastic cloth, or the like may be used as the top sheet.

The back sheet is a sheet member disposed on the non-skin surface side of the absorbent body, and is preferably liquid impermeable. As the back sheet, a nonwoven fabric or a plastic film made of hydrophobic fibers such as polyolefin (e.g., polypropylene or polyethylene), polyester (e.g., PET), and polyamide (e.g., nylon) can be used. Further, a laminate of nonwoven fabric and plastic film may be used as the back sheet.

The outer covering member may be liquid-permeable or liquid-impermeable, and a sheet material that can be used for the top sheet or back sheet may be used. The outer covering member is preferably formed by laminating an outer sheet on an inner sheet, and the inner sheet and the outer sheet may be either liquid-permeable or liquid-impermeable.

Preferably, when a nonwoven fabric is used as each sheet member described above, a spunbond nonwoven fabric, a hot-rolled nonwoven fabric, a point-bond nonwoven fabric, a meltblown nonwoven fabric, an air-laid nonwoven fabric, an SMS nonwoven fabric, or the like can be used as the nonwoven fabric.

The absorbent body is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorbent body, for example, an absorbent body in which an absorbent material is formed into a formed body having a predetermined shape, or an absorbent body in which the formed body is covered with a covering sheet such as a paper sheet (for example, thin paper or tissue paper) or a liquid-permeable nonwoven fabric sheet may be used. Examples of the absorbent material include hydrophilic fibers such as pulp fibers, and water-absorbent resins such as polyacrylic acid-based, polyaspartic acid-based, cellulose-based, and starch/acrylonitrile-based resins. The water-absorbent material may contain polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, or heat-fusible fibers such as polyamide fibers. These hot-melt fibers may be subjected to hydrophilization treatment with a surfactant or the like in order to improve the affinity with urine or the like.

The absorbent material preferably contains hydrophilic fibers from the viewpoint of increasing the absorption rate of urine or the like. In addition, the absorbent material preferably contains a water-absorbent resin from the viewpoint of improving the absorption capacity. Therefore, the absorbent material preferably contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, the water-absorbent resin is preferably mixed or dispersed in the hydrophilic fiber aggregate.

The absorbent body may be a sheet-like absorbent body. The sheet-like absorbent material is formed with a water-absorbent resin between nonwoven fabrics and without pulp fibers. The sheet-like absorbent body formed in this manner can achieve a high absorption capacity because the water-absorbent resin is interposed between the nonwoven fabrics. Further, since the sheet-like absorbent body does not have pulp fibers between the nonwoven fabrics, it can be formed to be thin without bulkiness.

The sheet-like absorbent material may use water-absorbent fibers as the absorbent material. In this case, the sheet-like absorbent body may be formed to be thin without being bulky. Examples of the water-absorbent fibers include fibers containing protonated or salified carboxyl groups. For example, the water-absorbent fiber can be obtained by hydrolyzing an acrylic fiber to convert a nitrile group contained in the acrylic fiber into a carboxyl group. At this time, the carboxyl group contained in the water-absorbent fiber preferably forms an alkali metal salt or an ammonium salt. The water-absorbent fiber can be produced by immersing the hydrophilic fiber in acrylic acid to precipitate acrylic acid on the fiber surface.

The shape (planar shape) of the absorber is not particularly limited. The shape of the absorber may be appropriately determined according to the application, and examples thereof include a substantially rectangular shape, an hourglass shape, a gourd shape, and a shuttlecock shape.

Preferably, the absorbent article is provided with a rising flap on the skin surface side. By providing the standing flap, side leakage of urine and the like is prevented. Preferably, the raising flap is provided with a flap elastic member extending in the front-rear direction, and raising of the raising flap is promoted by a contraction force of the flap elastic member.

The raising flap has a base portion as a raising starting point and a free end as a raising distal end, and a flap elastic member is provided between the base portion and the free end. The base portion of the standing flap may be joined to the top sheet, may be joined to the back sheet whose both side portions in the width direction are folded back to the skin surface side of the absorbent body, or may be joined to both of them. Preferably, the raising flap is formed so as to be raisable by joining a front side end portion and a rear side end portion thereof to the top sheet and/or the back sheet and providing a flap elastic member at a portion between the front side end portion and the rear side end portion.

Preferably, the flap is formed of flap forming pieces, the flap forming pieces are folded at free ends to form the flap, and the flap elastic member is disposed between the folded flap forming pieces. That is, it is preferable that a flap elastic member is provided between one side portion and the other side portion of the free end of the flap forming sheet whose free end is folded. The flap-forming sheet may be formed of a liquid-impermeable plastic film or a liquid-impermeable nonwoven fabric, and a sheet material that can be used for the back sheet may be used. Preferably, the flap elastic member is provided at least in the middle portion, more preferably from the middle portion to the front side portion and/or the rear side portion, when the standing flap is divided into the front side portion, the rear side portion, and the middle portion therebetween in the front-rear direction.

The flap-forming sheet may be formed of side sheets provided on both sides in the width direction of the top sheet. In this case, the side sheet is joined to the top sheet at the side joining portion, and an inner portion of the side sheet in the width direction with respect to the side joining portion may be formed as a flap forming body.

In the standing flap, it is preferable that the standing flap stands up toward the skin of the wearer as high as possible from the viewpoint of preventing leakage of urine or the like. However, in this case, the portion of the raised flap where the flap elastic member is provided tends to be in relatively strong contact with the skin of the wearer, resulting in a reduction in the wearing sensation.

In the absorbent article according to the embodiment of the present invention, the flap elastic member is attached to one side portion of the free end of the flap forming sheet folded at the free end, and the acetate aggregate is provided between the flap elastic member and the other side portion of the flap forming sheet. The cellulose acetate fiber aggregate can be formed flexibly as natural cellulose fibers such as cotton, and can be formed to have a very bulky structure and an excellent elastic recovery force as compared with cellulose fibers. Therefore, by arranging the acetate fiber aggregate and the flap elastic member so as to overlap each other between the folded flap forming sheets, the flap elastic member is less likely to strongly contact the skin of the wearer, and the flap-raising cushioning property can be imparted. On the other hand, since the flap elastic member is attached to the flap forming blade, the contraction force of the flap elastic member is directly transmitted to the flap forming blade, and the standing flap can be appropriately raised. The raised flap thus formed can be raised toward the skin of the wearer to enhance the effect of preventing leakage of urine or the like, and can also alleviate contact with the skin of the wearer, thereby providing excellent wearing comfort.

As the acetate fibers, two types of cellulose diacetate fibers and cellulose triacetate fibers are widely used, but preferably, cellulose diacetate fibers are used as the acetate fibers. Preferably, cellulose diacetate is acetylated with an average of 2.22 or more and less than 2.76 hydroxyl groups among three hydroxyl groups contained in the repeating unit of anhydrous glucose of cellulose, that is, with an esterification degree of 2.22 or more and less than 2.76.

Preferably, the acetate fiber aggregate is formed of long fibers oriented in the front-rear direction. Specifically, it is preferable that the acetate fibers constituting the acetate fiber aggregate are composed of long fibers, and the long fibers are oriented in the front-rear direction. Accordingly, when the gather is formed on the raising flap by the contraction force of the flap elastic member, the acetate fiber is bent and folded in the front-rear direction, and the volume of the acetate fiber aggregate is increased, thereby improving the cushioning property of the raising flap.

Preferably, the acetate fibers are used as long fiber bundles (filament bundles). For example, the acetate fiber aggregate may be formed of tow and sandwiched between flap forming sheets folded at the free ends in this state, and the acetate fiber aggregate may be sandwiched between flap forming sheets folded at the free ends as tow opening fibers. The length of the long fibers of the acetate fibers is preferably 5cm or more, more preferably 10cm or more, and still more preferably 15cm or more. The long fibers of the acetate fibers may extend continuously across the entire acetate fiber assembly in the front-rear direction.

The fineness of the acetate fiber is not particularly limited, but is preferably, for example, 0.1dtex to 10dtex from the viewpoint of sufficient strength for use.

The acetate fiber aggregate may contain, as a main component, acetate fibers, and fibers other than acetate fibers. The acetate fiber aggregate preferably contains acetate fibers in a proportion of 50 mass% or more, more preferably 70 mass% or more, further preferably 80 mass% or more, and further preferably 90 mass% or more. Particularly preferably, the acetate fiber aggregate is composed of only acetate fibers as a fiber component. On the other hand, preferably, the flap-forming sheet is free of acetate fibers.

Preferably, the acetate fiber aggregate is provided at least in a part of the intermediate portion when the standing flap is divided into the front side portion, the rear side portion, and the intermediate portion therebetween in the front-rear direction. The acetate fiber aggregate may be provided across the entire intermediate portion of the raising flap, or may be provided from the intermediate portion to the front side portion and/or the rear side portion. The acetate fiber aggregate is preferably provided in the front-rear direction, for example, at a length of 5cm or more, more preferably at a length of 10cm or more, and further preferably at a length of 15cm or more. The length of the acetate fiber aggregate described here is measured in a state where the elastic member disposed in the absorbent article is not subjected to the contraction force of the elastic member, such as by finely cutting. The utility model discloses a survey of various lengths all goes on equally. The width of the acetate fiber aggregate is, for example, preferably 3mm or more, more preferably 5mm or more, and further preferably 8mm or more; further, it is preferably 30mm or less, more preferably 25mm or less, and further preferably 20mm or less.

Preferably, the flap elastic is mounted to the flap forming sheet in a stretched state. Thus, the raising flap is easily raised by the contraction force of the flap elastic member. The flap elastic member is preferably attached to the flap-forming sheet at a stretch ratio of 1.2 times or more and 5.0 times or less, more preferably at a stretch ratio of 1.5 times or more, and still more preferably at a stretch ratio of 1.8 times or more; still more preferably 4.0 times or less, and still more preferably 3.5 times or less. The stretch ratio described here is 1.0 times in the unstretched state.

As the flap elastic member, an elastic material used for general absorbent articles such as a polyurethane thread, a polyurethane film, and natural rubber can be used. In addition, the same elastic material may be used for various elastic members described below.

Preferably, the flap elastic member is attached to one side portion sandwiching the free end of the flap forming sheet by an adhesive. As the adhesive, a hot melt adhesive is preferably used, and a rubber hot melt adhesive is more preferably used. Further, it is preferable that a portion of the flap elastic member overlapping the acetate aggregate is not attached to the other side portion sandwiching the free end of the flap forming sheet.

The acetate fiber aggregate is provided between the flap elastic member and the other side portion of the flap forming sheet so as to overlap at least a part of the flap elastic member. At this time, preferably, the acetate aggregate is bonded to the other side portion of the flap-forming sheet. Specifically, it is preferable that the acetate fiber aggregate is bonded to the other side portion of the flap-forming sheet at a bonding region provided to the other side portion of the flap-forming sheet. Thus, even if the gather of the standing flap is extended and contracted in the front-rear direction by the extension and contraction of the flap elastic member, the acetate fiber assembly can be firmly fixed to a predetermined position of the flap forming sheet. Preferably, the acetate fiber aggregate is bonded to the bonding region on the other side of the flap-forming sheet, and is continuously or intermittently provided in the front-rear direction with a predetermined width. The width of the bonding region is preferably 3mm or more, more preferably 5mm or more, and further preferably 8mm or more; further, it is preferably 30mm or less, more preferably 25mm or less, and further preferably 20mm or less. When the bonded regions are provided intermittently in the front-rear direction, the length of the intermittent portion in the front-rear direction is preferably 50mm or less, more preferably 30mm or less, and still more preferably 20mm or less. In addition, the bonding region is preferably present at least within 30mm, more preferably within 20mm, further preferably within 10mm, from the front side end to the rear side of the acetate fiber aggregate; preferably within 30mm, more preferably within 20mm, and even more preferably within 10mm from the rear side end to the front of the acetate fiber aggregate.

On the other hand, it is preferable that the acetate fiber aggregate is not bonded to one side portion of the sheet body with the flap interposed therebetween, or is bonded to one side portion only through a limited portion. In the latter case, the acetate fiber aggregate is preferably bonded to one side portion of the flap-forming sheet by an adhesive applied to the flap elastic member, and is not bonded to one side portion of the flap-forming sheet at the other portion. Therefore, the contraction force of the flap elastic member is easily transmitted to the flap forming sheet at the side portion sandwiching the free end of the flap forming sheet, and the rising of the rising flap is not easily hindered by the acetate aggregate.

Preferably, the acetate fiber aggregate is provided so as to extend over the entire flap elastic member in the front-rear direction and overlap. More preferably, the acetate fiber aggregate extends forward from the front side end of the flap elastic member and rearward from the rear side end of the flap elastic member. This makes it easier to suppress the flap elastic member from coming into strong contact with the skin of the wearer. The acetate fiber aggregate may extend over substantially the entire front-rear direction of the raising flap, and may extend, for example, within 10mm rearward from the front side end of the raising flap and within 10mm forward from the rear side end of the raising flap.

Either one of the one side portion and the other side portion of the standing flap sandwiching the free end of the flap forming sheet may face the skin surface side of the absorbent article. Preferably, the flap is formed so that the other side portion of the flap-forming sheet having higher cushioning properties contacts the skin of the wearer when the flap is raised. That is, the standing flap is preferably formed so that the other side portion of the free end of the flap-forming sheet is in contact with the skin of the wearer. This will be described in detail with reference to fig. 1 to 4. The present invention is not limited to the embodiments shown in the drawings.

Fig. 1 and 2 show a configuration diagram of a light incontinence pad as a first embodiment of an absorbent article of the present invention, and fig. 3 and 4 show a configuration diagram of a diaper as a second embodiment of an absorbent article of the present invention. Fig. 1 shows a plan view of an absorbent article (light incontinence pad) viewed from the skin surface side, fig. 2 shows a sectional view at ii-ii of the absorbent article shown in fig. 1, fig. 3 shows a plan view of the absorbent article (diaper) viewed from the skin surface side, and fig. 4 shows a sectional view at iv-iv of the absorbent article shown in fig. 3. In the figure, arrow x indicates the width direction of the absorbent article, arrow y indicates the front-rear direction of the absorbent article, and arrow z indicates the thickness direction of the absorbent article.

The absorbent article 1(1A, 1B) has a top sheet 2, a back sheet 3, and an absorbent body 4 disposed therebetween. The top sheet 2 is disposed on the skin surface side of the absorbent body 4, and the back sheet 3 is disposed on the non-skin surface side of the absorbent body 4. The excrement that has passed through the top sheet 2 is absorbed by the absorbent body 4. The back sheet 3 prevents the excrement from leaking to the outside. In the absorbent article 1A shown in fig. 1 and 2, an interleaving paper 5 is further provided between the back sheet 3 and the absorbent body 4, and the shape retention of the absorbent article 1A can be improved by the interleaving paper 5. The interleaving paper 5 may be composed of crepe paper or nonwoven fabric. The interleaving paper 5 may not be provided.

The absorbent article 1 is provided with a rising flap 6 on the skin surface side. The raising flap 6 has a base 10 as a raising start point and a free end 11 as a raising distal end, and a flap elastic member 8 extending in the front-rear direction y is provided between the base 10 and the free end 11. As shown in fig. 2 and 4, the flap forming sheet 7 is folded at the free end 11 to form the standing flap 6. In the figure, the flap-forming sheet 7 is joined to the top sheet 2 at the base 10, further extending to the outside in the width direction x and overlapping the back sheet 3.

The flap elastic member 8 is provided between the one side portion 7A and the other side portion 7B of the flap forming sheet 7 with the folded flap 6 interposed therebetween. The flap elastic member 8 is attached to one side portion 7A of the flap forming sheet 7 folded at the free end 11, and the acetate aggregate 9 is provided between the flap elastic member 8 and the other side portion 7B of the flap forming sheet 7. The raised flap 6 thus formed can properly rise toward the skin of the wearer and can alleviate the contact with the skin of the wearer, and therefore, is excellent in wearing feeling.

The flap forming sheet 7 has a side portion 7A on the side where the flap elastic member 8 is attached with the free end 11 therebetween. The base 10 of the raised flap 6 may be provided to one side portion 7A, the other side portion 7B, or both of the flap-forming sheet 7. In the absorbent article 1A, the base 10 is formed on the other side portion 7B of the flap-forming sheet 7; in the absorbent article 1B, the base 10 is formed on one side portion 7A of the flap-forming sheet 7.

In the absorbent article 1A and the absorbent article 1B, the cross-sectional shape in the width direction x of the standing flap 6 differs, and as a result, the appropriate arrangement of the flap elastic member 8 and the acetate aggregate 9 differs between the two. In the absorbent article 1A, the standing flap 6 is folded back along a folding line 12 extending in the front-rear direction y from the base 10 to the free end 11, and a flap distal end portion 13 as a portion from the folding line 12 to the free end 11 is provided with a flap elastic member 8 and an acetate aggregate 9. In the absorbent article 1A thus formed, the other side portion 7B of the flap-forming sheet 7 is preferably positioned on the skin surface side of the flap distal end portion 13 in a state where the flap 6 is laid down, that is, in a state where the flap 6 is folded. Thus, when the flap 6 is raised, the flap elastic member 8 is easily brought into contact with the skin of the wearer by the acetate fiber aggregate 9, and the cushioning property against the skin of the wearer is improved.

In the absorbent article 1A, it is preferable that the flap rising portion 14, which is a portion from the base 10 of the rising flap 6 to the fold-over line 12, is not provided with the acetate aggregate 9. This facilitates the rising flap 6 to rise high toward the skin of the wearer. Before the absorbent article 1A is used, the standing flap 6 may be folded thinly. On the other hand, the flap elastic member 8 may be provided to the flap rising portion 14.

As shown in fig. 1, in the absorbent article 1A, the acetate fiber aggregate 9 is provided at a length shorter than the flap elastic member 8 in the front-rear direction y. By providing the acetate fiber aggregate 9 in this manner, the raising flap 6 can be raised further high.

In fig. 1 and 2, the fold-over line 12 of the raised flap 6 is formed at the outer end of the flap distal end portion 13 in the width direction x, but the fold-over line 12 of the raised flap 6 may be formed at the inner end of the flap distal end portion 13 in the width direction x. In this case, the free end of the raised flap 6 is located at the outer end of the flap distal end portion 13 in the width direction x.

In the absorbent article 1B, the standing flap 6 is not folded over from the base 10 to the free end 11. In this case, it is preferable that the one side portion 7A of the flap formation sheet 7 is positioned on the skin surface side of the flap 6 in the laid-down state of the flap 6. In the absorbent article 1B, the higher the rising flap 6 rises, the more easily the inner side surface in the width direction x of the rising flap 6 in the standing state comes into contact with the skin of the wearer. Therefore, in the flap forming sheet body 7, the one side portion 7A to which the flap elastic member 8 is attached is positioned on the skin surface side of the standing flap 6 in the laid-down state of the standing flap 6, so that when the standing flap 6 stands up, the one side portion 7A of the flap forming sheet body 7 is easily positioned on the outer side surface in the width direction x, and the flap elastic member 8 is easily brought into contact with the skin of the wearer through the acetate fiber aggregate 9. In addition, when the contraction force of the flap elastic member 8 is not so strong, the rising of the rising flap 6 is suppressed, and the outer side surface of the rising flap 6 in the width direction x in the standing state may be more likely to contact the skin of the wearer. In this case, the other side portion 7B of the flap-forming sheet 7 may be positioned on the skin surface side of the flap 6 in the laid-down state of the flap 6.

In the absorbent article 1B, the acetate fiber aggregate 9 is preferably provided in the vicinity of the free end 11 of the base 10, apart from the base 10 of the raising flap 6. This makes it easier for the flap 6 to rise higher toward the skin of the wearer.

As shown in fig. 3, in the absorbent article 1B, the acetate fiber aggregate 9 is provided so as to extend over substantially the entire length of the standing flap 6 in the front-rear direction y. By providing the acetate fiber aggregate 9 in this manner, the wearer can be in good contact with the skin not only in the crotch but also in the abdomen or back.

In the above, the absorbent article in which the acetate fiber aggregate is provided on the standing flap has been described, but the absorbent article of the present invention may be provided with a leg elastic member at a portion along the leg circumference of the wearer and the acetate fiber aggregate at the portion. This will be explained below.

The leg elastic members are provided between the first sheet and the second sheet arranged on the non-skin surface side of the first sheet, and are provided on the outer side in the width direction of the absorber. The absorbent article can improve the fit to the leg circumferences of the wearer by disposing the leg elastic members, and prevent leakage of urine or the like from the leg circumferences of the wearer. The absorbent article provided with leg elastic members is preferably a disposable diaper. The leg elastic members may be provided at least partially outside the absorbent body in the width direction, and for example, the front side end and the rear side end of the leg elastic members may overlap the absorbent body. Hereinafter, a portion along the leg band of the wearer provided with the leg elastic member is referred to as a leg band portion.

The absorber may or may not be disposed between the first sheet and the second sheet. The combination of the first sheet and the second sheet includes a combination of a top sheet and a back sheet, a combination of a side sheet and a back sheet provided on both sides of the top sheet in the width direction, a combination of an inner sheet and an outer sheet of an exterior member, and the like.

In the leg hole portions, from the viewpoint of preventing leakage of urine or the like, it is preferable to ensure the fit of the leg hole portions of the absorbent article (particularly, disposable diaper) to the wearer. On the other hand, when the fit of the leg hole portions is improved in this way, the portions of the leg hole portions where the leg elastic members are provided tend to be in relatively strong contact with the skin of the wearer, resulting in a reduction in the wearing comfort.

In the absorbent article according to the embodiment of the present invention, the leg elastic member is attached to the second sheet on the non-skin surface side, and the acetate fiber aggregate is provided between the leg elastic member and the first sheet on the skin surface side. By providing the acetate fiber aggregate in this manner, the leg elastic members are less likely to strongly contact the skin of the wearer, and cushioning properties can be imparted to the leg hole portions. On the other hand, since the leg elastic members are attached to the second sheet, the contraction force of the leg elastic members is directly transmitted to the second sheet, and the gathers can be appropriately formed in the leg-surrounding portions. The leg hole portions thus formed can improve the fit to the leg holes of the wearer and can reduce the contact with the skin of the wearer, thereby providing excellent wearing feeling. The details of the acetate fiber aggregate are described with reference to the acetate fiber aggregate in the above description of the raising flap.

Preferably, the leg elastics are attached to the second panel in a stretched condition. This facilitates formation of gathers in the leg hole portions by the contraction force of the leg elastic members. The leg elastic members are preferably attached to the second sheet at a stretch magnification of 1.2 times or more and 5.0 times or less, more preferably at a stretch magnification of 1.5 times or more, and still more preferably at a stretch magnification of 1.8 times or more; still more preferably 4.0 times or less, and still more preferably 3.5 times or less. The stretch ratio described here is 1.0 times in the unstretched state.

Preferably, the leg elastics are attached to the second panel by adhesive. As the adhesive, a hot melt adhesive is preferably used, and a rubber hot melt adhesive is more preferably used. Further, it is preferable that a portion of the leg elastic member overlapping the acetate fiber aggregate is not attached to the first sheet.

The acetate fiber aggregate is provided between the leg elastic member and the first sheet body so as to overlap at least a part of the leg elastic member. Preferably, at least a part of the acetate fiber aggregate is disposed outside the width direction of the absorber; more preferably, the entire cellulose acetate aggregate is located outside the width direction of the absorbent body. The acetate fiber aggregate is preferably provided along the front-back direction or the extending direction of the leg elastic members, for example, at a length of 5cm or more, more preferably at a length of 10cm or more, and further preferably at a length of 15cm or more. The width of the acetate fiber aggregate is, for example, preferably 3mm or more, more preferably 5mm or more, and further preferably 8mm or more; further, it is preferably 30mm or less, more preferably 25mm or less, and further preferably 20mm or less.

Preferably, the acetate assembly is bonded to the first sheet. Specifically, it is preferable that the acetate fiber aggregate is bonded to the first sheet at a bonding region provided to the first sheet. Thus, even if the leg-surrounding portions are stretched by the stretching of the leg elastic members, the acetate fiber aggregate can be firmly fixed to the predetermined positions of the leg-surrounding portions. Preferably, the acetate fiber aggregate is bonded to the bonding region of the first sheet member, and is continuously or intermittently provided with a predetermined width in the front-rear direction or in the extending direction of the leg elastic members. The width of the bonding region is preferably 3mm or more, more preferably 5mm or more, and further preferably 8mm or more; further, it is preferably 30mm or less, more preferably 25mm or less, and further preferably 20mm or less. In the case where the bonded regions are provided intermittently, the length of the intermittent portion thereof in the front-rear direction or the extending direction of the leg elastic member is preferably 50mm or less, more preferably 30mm or less, and still more preferably 20mm or less. In addition, the bonding region is preferably present at least within 30mm, more preferably within 20mm, further preferably within 10mm, from the front side end to the rear side of the acetate fiber aggregate; preferably within 30mm, more preferably within 20mm, and even more preferably within 10mm from the rear side end to the front of the acetate fiber aggregate.

On the other hand, it is preferable that the acetate fiber aggregate is not bonded to the second sheet, or is bonded to the second sheet only through a limited portion. In the latter case, the acetate fiber aggregate is preferably bonded to the second sheet by an adhesive applied to the leg elastic member, and is not bonded to the second sheet at the other portions. This facilitates the transmission of the contraction force of the leg elastic members to the second sheet, and prevents the formation of gathers in the leg hole portions from being easily hindered by the acetate fiber aggregate.

In the leg hole portion, the acetate fiber aggregate may be provided so as to overlap across the entire leg elastic member in the front-rear direction. For example, in the case where the leg elastic member is provided to extend in the front-rear direction, the acetate fiber aggregate may be provided to extend forward from the front side end of the leg elastic member and to extend backward from the rear side end of the leg elastic member. This makes the leg hole portions more softly contact the skin of the wearer, thereby improving the wearing feeling of the absorbent article.

The absorbent article having the leg hole portions configured as described above can be suitably applied to a tape-type disposable diaper or a pants-type disposable diaper. In the tape-type disposable diaper, for example, a liquid-permeable top sheet is provided on the skin surface side of an absorbent body, a liquid-impermeable back sheet is provided on the non-skin surface side of the absorbent body, and side sheets are provided on both sides in the width direction of the top sheet. In the pants-type disposable diaper, the absorbent body is disposed in the crotch region of the outer cover member forming the shape of pants, but the outer cover member may be constituted by an outer sheet and an inner sheet provided on the skin surface side thereof, the inner sheet may be the first sheet described above, the outer sheet may be the second sheet described above, and leg elastic members and an acetate fiber assembly may be provided between the inner sheet and the outer sheet. In this case, the leg elastic members are preferably provided along the leg opening edges of the outer covering member forming the underwear shape.

An example of the structure of an absorbent article having an acetate fiber assembly disposed in the leg hole portions will be described with reference to the drawings. Fig. 5 and 6 show an example of a structure of a tape-type disposable diaper as a third embodiment of an absorbent article according to the present invention, fig. 5 shows a plan view of the absorbent article (tape-type disposable diaper) as viewed from the skin surface side, and fig. 6 shows a cross-sectional view at vi-vi of the absorbent article shown in fig. 5.

The absorbent article (tape-type disposable diaper) 21 has a liquid-permeable top sheet 22, a liquid-impermeable back sheet 23, and an absorbent body 24 disposed therebetween. Side sheets 27 extending in the front-rear direction y are provided on both sides in the width direction x of the top sheet 22. The side sheet 27 is joined to the top sheet 22, and a flap elastic member 28 is provided on an inner portion of the side sheet 27 in the width direction x with respect to the joining portion with the top sheet 22. When the absorbent article 21 is used, the inner surface portion of the side sheet 27 rises toward the skin of the wearer by the contraction force of the flap elastic member 28, thereby forming a rising flap 29 to prevent lateral leakage of urine or the like.

The absorbent article 21 is provided with fixing members 25 on both sides in the width direction x. Preferably, the fixing members 25 are attached to both end portions in the width direction x of the back portion of the absorbent article 21. The fixing member 25 is formed by providing a fixing member (e.g., hook/loop/fastener, adhesive) on the base sheet. On the other hand, the absorbent article 21 is preferably provided with a fixing corresponding portion 26 on the non-skin surface side of the front abdominal region. The absorbent article 21 is put against the crotch of the wearer and can be worn by joining the fastener of the fastening member 25 to the fastening counterpart 26.

Leg elastic members 30 extending in the front-rear direction y are provided at both ends of the absorbent article 21 in the width direction x. By forming gathers along the leg circumferences of the wearer by the leg elastic members 30, the fit of the leg circumferences can be improved, and leakage of urine or the like can be prevented. The leg elastic member 30 is disposed between the side piece 27 and the back piece 23 and attached to the back piece 23, and the acetate fiber aggregate 32 is disposed between the leg elastic member 30 and the side piece 27. By providing the leg elastic members 30 and the acetate fiber aggregate 32 in this manner, the fit of the absorbent article 21 to the leg hole of the wearer can be improved, and the contact of the leg hole portion of the absorbent article 21 with the skin of the wearer can be alleviated, so that the wearing feeling is excellent.

Preferably, the absorbent article 21 is provided with a waist elastic member 31 extending in the width direction x at an end in the front-rear direction y. The waist elastic member 31 forms a waist gather along the waist circumference of the wearer, thereby preventing urine and the like from leaking from the abdomen side or the back side. The waist elastic member 31 is provided between the topsheet 22 and the backsheet 23, and a portion may be provided between the side sheet 27 and the backsheet 23.

Fig. 7 to 9 show a pants-type disposable diaper as a fourth embodiment of the absorbent article of the present invention. Fig. 7 is a perspective view of an absorbent article (disposable diaper in pants type), fig. 8 is a plan view of the absorbent article (disposable diaper) shown in fig. 7 in a state where the front abdominal section and the back section are unfastened and developed, and fig. 9 is a cross-sectional view of the absorbent article shown in fig. 8 at ix-ix.

The absorbent article (pants-type disposable diaper) 41 has a waist opening 42 and a pair of leg openings 43, and has an outer covering member 44 formed in a pants shape. The exterior member 44 is composed of an inner layer sheet 45 and an outer layer sheet 46, and the inner layer sheet 45 is disposed on the skin surface side of the outer layer sheet 46. The waist opening 42 is an opening for passing the torso of the wearer, and the leg openings 43 are openings for passing the legs of the wearer. The exterior member 44 is composed of a front abdominal section P, a back section Q, and a crotch section R located therebetween, and is formed into the shape of underwear by joining the front abdominal section P and the back section Q.

The disposable diaper 41 is provided with an absorber 50 in the crotch portion R. The absorbent body 50 may be present at least in the crotch portion R, and may further extend to the front abdominal portion P and/or the back portion Q. As shown in fig. 9, in the disposable diaper 41, an absorbent body 47 having an absorber 50 disposed between a top sheet 48 and a back sheet 49 is provided on the skin surface side of an exterior member 44. The back sheet 49 is folded back at the end edge in the width direction x of the absorbent 50 and joined to the top sheet 48.

Preferably, the absorbent body 47 is provided with standing flaps 51 on both sides in the width direction x. By providing the standing flap 51, side leakage of urine or the like can be prevented. The raising flap 51 is provided with a flap elastic member 52, and raising of the raising flap 51 is promoted by a contraction force of the flap elastic member 52.

The exterior member 44 is provided with leg elastic members 53 along the edges of the leg openings 43. In fig. 7 and 8, the leg elastic members 53 are composed of a front leg elastic member 53F and a rear leg elastic member 53B, the front leg elastic member 53F being provided along the front edge of the leg opening 43 across the crotch portion R, and the rear leg elastic member 53B being provided along the rear edge of the leg opening 43 across the crotch portion R. The front leg elastic member 53F and the rear leg elastic member 53B are provided so as to extend over substantially the entire periphery of the edge of the leg opening 43, thereby forming leg gathers along the leg circumference of the wearer and preventing leakage of urine or the like from the crotch portion. Although the front leg elastic member 53F and the rear leg elastic member 53B are provided separately from each other in the drawing, the front leg elastic member 53F and the rear leg elastic member 53B may be connected to each other or staggered.

Preferably, the front leg elastic member 53F and the rear leg elastic member 53B are intermittently provided at a portion crossing the crotch portion R in the width direction x. In addition, in the other portions, it is preferable that the front leg elastic member 53F and the rear leg elastic member 53B are continuously provided. If the front leg elastic members 53F and the rear leg elastic members 53B are provided in this manner, the absorbent body 47 is less likely to warp, and the fit of the absorbent body 47 in the crotch of the wearer is improved. In the case where the leg elastic members 53 are intermittently provided, the leg elastic members 53 may be cut with a cutter or the like after the leg elastic members 53 are adhesively fixed to the exterior member 44. By providing such an arrangement, the leg elastic members 53 can be provided intermittently and easily in terms of manufacturing, and the contractive force of the elastic members can be substantially eliminated in the portions where the leg elastic members 53 are provided intermittently.

The leg elastic members 53 are disposed between the inner sheet 45 and the outer sheet 46 and attached to the back sheet 46, and the acetate fiber aggregate 56 is disposed between the leg elastic members 53 and the inner sheet 45. By providing the leg elastic members 53 and the acetate fiber aggregates 56 in this manner, the fit of the absorbent article 41 to the leg hole of the wearer can be improved, and the contact of the leg hole portion of the absorbent article 41 with the skin of the wearer can be alleviated, so that the wearing feeling is excellent.

Preferably, the front abdominal part P and the back part Q of the exterior member 44 are provided with a plurality of trunk elastic members 54 extending in the width direction x between the inner sheet 45 and the outer sheet 46. The trunk elastic member 54 is provided between the waist opening portion 42 and the leg opening portions 43. The body elastics 54 improve the fit of the wearer's body. The waist elastic member 55 may be an elastic member provided at a narrow interval in the front-rear direction y along the edge of the waist opening 42 in the trunk elastic member 54, thereby forming a waist gather along the waist circumference of the wearer and preventing urine and the like from leaking from the back side or the abdomen side. In fig. 7 and 8, the waist elastic members 55 are provided at intervals narrower in the front-rear direction than the trunk elastic members 54.

The exterior member 44 may be folded back along the edge of the waist opening 42. For example, the outer sheet 46 may be folded back toward the inner sheet 45 (not shown) at the edge of the waist opening 42 of the outer covering member 44. In this case, the waist elastic member 55 may be sandwiched between the folded-over outer sheet 46 and bonded to the outer sheet 46.

Although the absorbent article of the present invention has been described above, the absorbent article of the present invention may be provided with the acetate fiber aggregate in either one of the standing flap and the leg hole portion, or may be provided with the acetate fiber aggregate in both of them. In any case, an absorbent article having excellent wearing comfort can be obtained by preventing side leakage of urine or the like by the gather of the rising flap or the leg hole portion, and by alleviating contact of the elastic member with the skin of the wearer at the crotch portion or the leg hole portion of the wearer.

Claims

1. An absorbent article having a width direction and a front-back direction and provided with a standing flap on a skin surface side,

the raising flap has a base as a raising starting point and a free end as a raising distal end, and is formed by folding over a flap forming sheet at the free end;

a flap elastic member extending in the front-rear direction between one side portion and the other side portion of the free end of the flap forming sheet body, the flap elastic member being folded over;

the flap elastic member is mounted to the one side of the flap-forming sheet;

an acetate fiber aggregate is arranged between the flap elastic member and the other side part of the flap forming sheet body.

2. The absorbent article of claim 1 wherein the standing flap is folded over in a fold-over line extending in a fore-and-aft direction between the base to the free end;

the flap elastic member and the acetate aggregate are provided to a flap distal end portion between the fold line and the free end;

the flap forming sheet has the other side portion located on the skin surface side of the flap distal end portion in a laid-down state of the standing flap.

3. The absorbent article of claim 1 wherein the riser flap is not folded over from the base to the free end;

the flap forming sheet has the one side portion located on a skin surface side of the flap in a laid-down state of the flap.

4. The absorbent article of claim 2 wherein the acetate assembly is not disposed between the base of the raised flap and the fold-over line.

5. The absorbent article of claim 3 wherein the acetate assembly is disposed further from the base of the raising flap and closer to the free end than the base.

6. The absorbent article of any one of claims 1-5 wherein the flap elastic member is attached to the one side portion of the flap-forming sheet by an adhesive;

the acetate fiber aggregate is bonded to the other side part of the flap forming sheet body in a bonding area provided to the other side part; adhering to the one side of the flap-forming sheet by an adhesive applied to the flap elastic; the other portions are not bonded to the one side portion of the flap-forming sheet.

7. The absorbent article according to any one of claims 1 to 5, wherein the acetate fiber aggregate is bonded to the other side portion of the flap-forming sheet, and is not bonded to the one side portion of the flap-forming sheet.

8. The absorbent article according to any one of claims 1 to 5, wherein the acetate fiber aggregate extends forward from a front side end of the flap elastic member and rearward from a rear side end of the flap elastic member.

9. The absorbent article according to any one of claims 1 to 5, wherein the acetate fiber aggregate extends to within 10mm rearward from a front side end of the raising flap and extends to within 10mm forward from a rear side end of the raising flap.

10. An absorbent article having a width direction and a front-back direction and provided with an absorber, characterized in that a leg elastic member is provided between a first sheet and a second sheet arranged on a non-skin surface side of the first sheet on the outer side of the absorber in the width direction;

the leg elastics are mounted to the second panel;

an acetate fiber assembly is provided between the leg elastic member and the first sheet.

11. The absorbent article of claim 10 wherein the leg elastic is attached to the second panel by an adhesive;

the acetate fiber aggregate is bonded to the first sheet body in a bonding area provided on the first sheet body; bonded to the second panel by an adhesive applied to the leg elastics; the other portions are not bonded to the second sheet.

12. The absorbent article of claim 10 wherein the acetate assembly is bonded to the first panel and not bonded to the second panel.

13. The absorbent article according to any one of claims 10 to 12, wherein the absorbent article is a tape-type disposable diaper;

a liquid-permeable top sheet is arranged on the skin surface side of the absorber, a liquid-impermeable back sheet is arranged on the non-skin surface side of the absorber, and side sheets are arranged on two sides of the top sheet in the width direction;

the side piece is the first lamellar body, the tergite is the second lamellar body.

14. The absorbent article according to any one of claims 10 to 12, wherein the absorbent article is a pants-type disposable diaper, and the absorber is disposed in a crotch portion of an outer covering member forming a shape of underwear;

the outer covering member has an outer sheet body and an inner sheet body provided on a skin surface side thereof;

the inner layer sheet body is the first sheet body, and the outer layer sheet body is the second sheet body.